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mirror of https://github.com/postgres/postgres.git synced 2025-07-24 14:22:24 +03:00
Alvaro Herrera 270af6f0df Admit deferrable PKs into rd_pkindex, but flag them as such
... and in particular don't return them as replica identity.

The motivation for this change is letting the primary keys be seen by
code that derives NOT NULL constraints from them, when creating
inheritance children; before this change, if you had a deferrable PK,
pg_dump would not recreate the attnotnull marking properly, because the
column would not be considered as having anything to back said marking
after dropping the throwaway NOT NULL constraint.

The reason we don't want these PKs as replica identities is that
replication can corrupt data, if the uniqueness constraint is
transiently broken.

Reported-by: Amul Sul <sulamul@gmail.com>
Reviewed-by: Dean Rasheed <dean.a.rasheed@gmail.com>
Discussion: https://postgr.es/m/CAAJ_b94QonkgsbDXofakHDnORQNgafd1y3Oa5QXfpQNJyXyQ7A@mail.gmail.com
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PostgreSQL Database Management System

This directory contains the source code distribution of the PostgreSQL database management system.

PostgreSQL is an advanced object-relational database management system that supports an extended subset of the SQL standard, including transactions, foreign keys, subqueries, triggers, user-defined types and functions. This distribution also contains C language bindings.

Copyright and license information can be found in the file COPYRIGHT.

General documentation about this version of PostgreSQL can be found at: https://www.postgresql.org/docs/devel/
In particular, information about building PostgreSQL from the source code can be found at: https://www.postgresql.org/docs/devel/installation.html

The latest version of this software, and related software, may be obtained at https://www.postgresql.org/download/. For more information look at our web site located at https://www.postgresql.org/.

Description
Зеркало официального репозитория PostgreSQL GIT
Readme 1.1 GiB
Languages
C 85.2%
PLpgSQL 6%
Perl 4.5%
Yacc 1.2%
Meson 0.7%
Other 2.1%